Fujitsu AIRSTAGE J-IIIL Design & Technical Manual page 537

¢ Work flow example
Preparations
Prepare schedule of works
Refrigerant check
Operation chart preparation
Start of work
Indoor unit and RB unit installation
Refrigerant piping work
Drain piping work
Duct work
Installation work
Remote controller installation
Electrical wiring work
Outdoor unit foundation work
Outdoor unit installation
2-1. Important items when using refrigerant (R410A)
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Do not connect to the power supply.
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Always check the refrigerant to be used.
Always use the specified refrigerant.
Prepare materials/tools matched to refrigerant
Use copper tube of specified material and thickness
to meet endurance pressure of the pipe. (609 psi [4.2
MPa])
Do not use pipe with dust and dirt sticking to it during
piping connection work.
Always flow dry nitrogen through piping while braz-
ing.
- (06-15) -
2. Piping design